CuO Nanosheets Modified with Amine and Thiol Grafting for High Catalytic and Antibacterial Activities

• DOI: 10.1021/acs.iecr.9b00609
• Publication Date: 2019-05-16T13:45:26Z
• Authors: Julien Vieillard; Nabil Bouazizi; Mohammad Neaz Mor...; Thomas Clamens; Florie Desriac; Radhouane Bargougui; Pascal Thebault; Olivier Lesouhaitier; Franck Le Derf; Abdelkrim Azzouz
• Keywords: 500; [CHIM]Chemical Sciences; 540; 01 natural sciences; 3. Good health; 0104 chemical sciences

The aim of the present study is to develop an ecofriendly and cost-effective method for the synthesis and functionalization of copper oxide (CuO) nanosheets by chemical grafting of 3-(chloropropyl)triethoxysilane (ClPTES), p-aminothiophenol (ATP) and diethanolamine (DEA). Full characterization of the resulting materials through FTIR, X-ray diffraction (XRD), scanning–transmission electron microscopy (STEM) and energy-dispersive X-ray fluorescence (ED-XRF) allowed confirmation of the grafting of ClPTES, ATP, DEA, and CuO crystalline phase and assessment of the average size of the as-prepared CuO (500 nm) and its high purity, respectively. Cu functionalization was found to confer high catalytic activity in 4-nitrophenol (4-NP) reduction into 4-aminophenol (4-AP), methylene blue (MB) degradation, and decomposition of their mixture. Besides, DEA- and ATP-modified CuO also exhibited appreciable antibacterial capacity against Staphylococcus epidermidis and Escherichia coli. These results are of great importance...